fix: don't error if Deno.bench() or Deno.test() are used in run subcommand

[bartlomieju]

Fixes #14862

[dsherret]

LGTM.

I kind of wonder if it would have been good to throw with Deno.test originally in order to guide people to using the deno test sub command in case they use deno run, but it's probably pretty obvious when someone accidentally does that. Maybe not perfect for beginners, but not a big deal.

[bartlomieju]

LGTM.

I kind of wonder if it would have been good to throw with Deno.test originally in order to guide people to using the deno test sub command in case they use deno run, but it's probably pretty obvious when someone accidentally does that. Maybe not perfect for beginners, but not a big deal.

Some people want to have testing code in the same file as the actual code. I think it makes sense for some one-off scripts or CLI tools.

[nayeemrmn]

An error can still be seen for Deno.test() in deno bench and vice versa, since the switch is unified here.